Something interesting for those in Japan (unfortunately, if you want this, you have to get someone who lives in Japan to pledge on your behalf)... a crowd-funding project for some retro items that have been released in Japan in the past.
The details are come from a Japanese source, so translations might be a little off...
There are two pledge points, but the difference in the two packs appears to be negligible, with what could be a personalised frill being the extra.
The cheaper point is 16,800yen (about AU$230), while the higher price point is 22,000yen (about AU$300).
The set has a golden "statue" Gen1 Optimus Prime like the competition figure from quite a few years ago in the original Generations book, which is stuck to the base plate, but can still transform. It also comes with a reproduction of the Japanese S.T.A.R.S. mailaway kit... which is a similar concept to the Hasbro one, but everything is completely different (even the cardboard base you build is different to the Hasbro one).
Also included is a book that is said to contain packaging art (probably a Japanese version of the Legacy book).
The pledge period is from July 1st to August 31st, and they need at least 2000 pledges for it to go ahead, with 500 of the higher priced packs available (I guess once those 500 are sold out, people can only pledge to the cheaper option). They also note that if it is really popular and goes above 3000 pledges, they will offer more items.